杨树造林,Poplar tree afforestation
1)Poplar tree afforestation杨树造林
1.Poplar tree afforestation is the main management pattern in Yunan mountainous region,according to the characteristics of shoal,plant and distribution,apply for the scientific afforestation method and development management.杨树造林是豫南大别山区最重要的经营方式,根据土壤、种苗、密度配置等特点,应用科学的造林技术和抚育管理。
英文短句/例句
1.Site Election and Growth Calculation of Populus Afforestation under Flooding Stress in Beach Land of Dongting Lake;滩地淹水胁迫条件下杨树造林立地选择及生长预测研究
2.Primary study on controlling on the canker disease of new afforested poplar in northern Jiangsu苏北杨树新造林地溃疡病防治技术初探
3.Research and Implement of Decision Support System on Silviculture and Management of Poplar Fast-Growing Plantation杨树速生丰产林营造林辅助决策系统研究与实现
4.Intercropping of narrow crown poplar and agricultural crops will be popularized and networks of forest belts on farmland will be built.在平原农区，大力推广窄冠型杨树与农作物间作，并营造农田林网；
5.The Dimensional Stability and Color Indexes of Square Lumber from Poplar and Larch Plantations were Tested;人工林杨树、落叶松人造方材物理性能指标测试与分析
6.Identification and ITS sequence analysis of the canker disease of the new poplar forestation in north of Jiangsu province苏北杨树新造林地溃疡病病原菌的鉴定与ITS序列分析
7.Native Auxiliary Species of Mixed Broadleaf-Korean Pine Stands--Populus ussuriensis Kom.阔叶红松林的伴生乡土杨树——大青杨
8.Stem Sap Flow Dynamics and Transpiration of a Poplar Plantation;杨树人工林树干液流动态变化与林分蒸腾
9.A New Poplar Variety ‘Lulin-3’ for Plywood and Pulpwood杨树胶合板材纸浆材新品种‘鲁林3号杨’
10.A New Poplar Variety "Lulin-2" for Plywood and Pulpwood杨树胶合板材纸浆材新品种‘鲁林2号杨’
11.A New Poplar Variety "Lulin-1" for Plywood and Pulpwood杨树胶合板材纸浆材新品种‘鲁林1号杨’
12.A STUDY ON PRINCIPAL FELLING AGE OF POPLAR PLANTATION ON CHANGJIANG RIVER BEACH长江滩地杨树人工林主伐年龄的研究
13.Aboveground Biomass and Carbon Storage of Poplar Plantation;杨树人工林地上生物量和碳储量研究
parative Analysis of Microbial Floras of Poplar Plantations in Beijing北京杨树人工林微生物区系比较分析
15.Analysis on Dynamics and Structure of Spider Communities in Poplar Woods in Qufu of Shandong Province人工杨树林蜘蛛群落结构及动态分析
16.The Occurrence and Control of Diseases and Pests of Poplar Forest in Bazhou City霸州市杨树片林病虫害的发生与防治
17.Research on Soil Respiration Dynamics and Poplar Fine Root for Four Hybrid Poplar (Populus×Euramericana cv.) Plantation Patterns in the Northern Areas of Jiangsu Province;苏北不同杨树人工林经营模式下土壤呼吸及杨树细根研究
18.Calculating Biomass and Carbon Storage of Poplar Plantation Based on Tree Structure基于树体结构推算杨树人工林生物量及碳储量
相关短句/例句
poplar stands for papermaking杨树造纸林
3)poplar afforestation in autumn杨树秋季造林
4)poplar forest belt杨树林带
1.Tests of fertilization with same value and different kinds onpoplar forest belt were conducted.在杨树林带中进行同价值不同种类肥料施肥试验,对其林带生长历时跟踪调查,试验结果表明,施肥对其胸径、树高生长有明显的促进作用,收获量及木材等级明显提高,其经济效益十分显著。
5)poplar stand杨树林分
1.Sanitation disafforestation can improve the condition ofpoplar stand infected by pest and diseases and control the reoccuring and pervading of pest and diseases.发生病虫害的杨树林分,通过卫生间伐,不仅能大大改善林地卫生状况,控制林分病虫害的重复发生和蔓延,而且通过卫生间伐能促进林木的生长,提高木材质量,缩短林木成熟期,能显著提高林木工艺价值和经济效益。
6)Scale forests of Poplar tree杨树片林
延伸阅读
春季杨树常见病害杨树溃疡病主要发生于苗木移植过程中，3下旬开始发病，4月中旬至5月下旬为发病高峰期，6月初基本停止，10月后稍有发展。该病可侵染树干、根茎和大树枝条，但主要危害树干的中部和下部。发病初期树干皮孔附近出现水泡，水泡破裂后流出带臭味的液体，内有大量病菌。病部最后干缩下陷成溃疡斑，病斑处皮层变褐腐烂，当病斑横向扩展环绕树干一圈后，树即死亡。杨树长势衰弱时易发病。防治方法：①选用壮苗造林，起苗时尽量避免伤根，运输假植时保持水分。②定植前用ABT3号生根粉溶液沾根，定植时浇足底水，定植后对幼树干部喷施5406细胞分裂素1000倍液。③春季在树干下部涂上白涂剂，或用0.5波美度石硫合剂，或用1:1:160波尔多液喷干，可预防树干感染，降低发病率。若发病率在50%以上时，涂干也不会有明显效果，可平茬。杨树黑斑病该病5月初开始发生，夏秋最盛，直至落叶为止。可危害杨树叶片、叶柄、果穗、嫩梢等，在其上形成角状、近圆形或不规则的黑褐色病斑，直径约1毫米，有的达5毫米。病斑多时可连成不规则的大块斑，引起早期落叶。防治方法：①选育抗病杨树品种。②发病期间，苗圃和幼林用200倍的波尔多液或85%代森锌250倍液喷洒。③合理密植、及时间伐，保持林内通风透光。及时清扫林内落叶，以减少病源。④可在6月上旬喷40%多菌灵800倍液，或25%百菌清600至800倍液，或O.3%尿素及磷酸二氢钾混合液防治。杨树叶枯病该病从杨树叶片抽生开始，危害杨树叶片、嫩梢和幼茎，受害叶片以5至6月感病最重。受害的叶片上出现近圆形、多角形或不规则形的病斑，直径1至5毫米，病斑多时可连成大斑。病斑上有黑褐色霉状物。嫩梢和嫩茎上的病斑凹陷，呈棱形，上有绿色霉层。防治方法：①从发病开始，进行药剂防治，在整个生长季节喷2至3次药，可用40%乙磷铝300倍液，或75%百菌清500倍液，或50%多菌灵1000倍液防治。②及时清除枯枝落叶，并带出林外集中烧毁或埋沤制肥，以减少菌源。杨树腐烂病主要危害杨树枝干、枝条的各个部位，病斑形状不规则，大小不等。发病初期病斑呈暗褐色，水渍状，后失水干缩下陷，有时病斑开裂成丝状。后期在病斑上密生出许多小黑点。潮湿时，从病斑的小黑点中能长出卷曲的，橘黄色的丝状物。该病的病斑每年向外扩展，当包围枝干一圈时，上部枝、干会全部死亡。在春、夏降水量大的年份，腐烂病发病严重。防治方法：①用刀刮除病斑，应刮至健部，再在病斑上涂10倍的食用碱水，或20％农抗120水剂10倍液，连涂2至3次即可。②春天或秋天，在树干下部涂上白涂剂，生石灰、食盐、水的配制比例为1:0.3:10。（来源：《中国花卉报》.03.18）
